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Egyptian Journal of Neurosurgery
Fig. 2 | Egyptian Journal of Neurosurgery

Fig. 2

From: Ability of diagnostic injection to predict surgical outcomes in patients with chronic low back pain and lumbar radiculopathy

Fig. 2

Lumbosacral spine imaging studies and selective nerve root block of 38-year-old female patient complaining of severe left sciatica since 4 months with mild chronic low back pain operated for L5-S1 discectomy following positive left S1 nerve root block. LSS X-ray dynamic standing flexion and extension (a) showing normal alignment of the lumbar spine with no signs of instability, normal spinal canal dimensions. Left S1 selective nerve root block: (b) oblique and AP (c) views showing the position of the tip of spinal needle in the S1 intervertebral foramen. MRI LSS [Sagittal T1 (d), sagittal T2 (e), L5-S1 axial T1 (f), L5–S1 axial T2 (g)] showing L5–S1 posterior disk prolapse with caudal migration with mild compression of ventral thecal sac. Left S1 selective nerve root block AP view (h) after injection of contrast showing the trajectory of S1 nerve root

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